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Neisseria meningitidis may cause severe invasive disease. The carriage state of the pathogen is common, and the reasons underlying why the infection becomes invasive are not fully understood. The aim of this study was to compare the differences between invasive and carrier strains in the activation of innate immunity. The monocyte expression of TLR2, TLR4, CD14, and HLA‐DR, cytokine production, and...
The investigational multicomponent meningococcus serogroup B vaccine (4CMenB) targets the antigenetically variable population of serogroup B meningococci. Forty-one strains of capsule null locus (cnl) meningococci, which are frequent among healthy carriers, were selected from nine sequence types (ST), which belong to four clonal complexes (cc), and three countries. They were antigen sequence typed...
Pneumococcal conjugate vaccines (PCV) may reduce nasopharyngeal carriage (NPC) of Streptococcus pneumoniae vaccine strains (VT), but serotype replacement with non-vaccine strains (NVT) has been reported. Bacterial NPC after PHiD-CV vaccination was assessed in the second year of life.Open descriptive study of NPC reported for 414 subjects vaccinated at 3–5 and 12–15 months of age with PHiD-CV with...
Following primary and booster vaccination with an 11-valent pneumococcall protein D conjugate vaccine there was a 42.8% (95% CI: −16.7 to 71.9, ns) reduction in the carriage of Streptococcus pneumoniae vaccine serotypes and a 42.6% (95% CI: 1.3–66.6) reduction in the carriage of Haemophilus influenzae identified by standard microbiological techniques. When PCR and immunoblot assays were used to further...
In contrast to the other vaccine serotypes, no protection could be demonstrated in the POET study against serotype 3 acute otitis media (AOM) following primary and booster vaccination with a multi-valent pneumococcal conjugate vaccine.AOM efficacy and immunogenicity data were reviewed. Pheno- and genotypic characteristics of different serotype 3 strains including efficacy study AOM isolates were evaluated...
Acute otitis media is one of the most commonly-diagnosed childhood infections. This study assessed the efficacy of a novel vaccine that contained polysaccharides from 11 different Streptococcus pneumoniae serotypes each conjugated to Haemophilus influenzae-derived protein D in prevention of acute otitis media. 4968 infants were randomly assigned to receive either pneumococcal protein D conjugate...
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